Soot blower for double walled boiler settings



DE L05 EQHIBNER ETAL 2,343,112

500T BLOWER FOR DOUBLE WALLED BOILER SETTINGS Filed oci. 9, 1942 sSheets-Sheet 1 FIFJIE IE I I II Feb. 29, 1944. DE LOS E. HlBNER ETAL2,343,112

500T BLOWER FOR DOUBLE WALLED BOILER SETTINGS s Sheets-Shet 2 Filed Oct.9. 1942 Feb. 29, 1944. DE LOS E. HIBNER ETAL 2,343,112

SOOT BLOWER FOR DOUBLE WALLED BOILER SETTINGS Filed Oct. 9, 1942 3Sheets-Sheet 3 Patented Feb. 29, 1944 SOOT BLOWER FOR DOUBLE WALLEDBOILER SETTINGS De Los E. Hibner and Fred C. Arey, Du Bois, Pa...assignors to Vulcan Soot Blower Corporation, a corporation ofPennsylvania Application October 9, 1942, Serial No. 461,408

3 Claims.

The present invention relates to soot blower means, particularly asapplied to installations in which the boiler setting is provided withdouble walls spaced apart from'each other; and has for its object tomake it possible to cause all-of the blower apparatus except a fewsimple actuating parts, to be concealed within vtheplace between-thesections of the double wall on which the units are mounted. 1

When the heads of theblower units are 10-.

cated between the two sections of the double wall, the outer Wallsection may be removed without disturbing the blower installation,provided that the external actuating means does not interfere. A furtherobject of'the present invention is so to construct and arrange theactuatingmechanism that it can easily be applied to 'orbe removed fromthe blower apparatus at will; thereby simplifying the work of installingthe system and of removing the outer wall section. The various featuresof novelty where- 'by our invention is characterized will hereinafter bepointed out with particularity in the bodying the present invention,arranged one upon the other; Fig. 2 is a vertical section on a largerscale than Fig. 1, showing only the lower blower unit, in section; Fig.3 is a section on a somewhat larger scale than Fig. l on line 33 of Fig.1; Fig. 4. is a section on line 4-4 of Fig. 2, only the extension of therotatable: blower element and the part of the actuator surroundedthereby being shown; Fig. 5 is an elevational view, on a smaller scalethan Fig. 1, looking at the boiler from the outside, lengthwise of theblower element and illustrating an actuating fmeans common to all of theunits; and Fig. 6

conventional type; and, all three may be alike. Each unit includes ahead'4 adapted tobe supplied with steam or other cleaning fluid throughan inlet pipe 5; the corresponding tubular blower element extending atone end into and being rotatable in the head. It will be seen that theheads 4 are mounted on the inner wall section with the space between thetwo sections and independently of the outer section.

Details of the blower units and their actuators, as well as of theirmountings, are shown more fully in Figs. 2 4 in which one of thecomplete units and its actuator is illustrated. It will be seen fromFig.- 2 that the jetting or blower element? is provided with a tubularextension 6 that passes entirely through and is rotatable in the head 4secured in any available way to the outer side of the inner wallsection. The members 3 and B are connected together by a suitablecoupling sleeve i which serves also as a shoulder to prevent theextension from being drawn outwardly through the head. Surrounding theextension, just beyond the outer side of the head, is a detachablecollar 8. Therefore the extension is held against lengthwise movementrelatively to the head by the sleeve 1 and the collar '8, until thecollar is removed.

The member 6 contains an imperforate partition 9 extending across theinterior thereof toward its outer end. A short distance inwardly fromthe partition 9 are the usual ports I0 which permit steam or othercleaning fluid to pass from the head into the member 6. Within the head,and surrounding the member 6 toward the free end of the latter, is asuitable packing II to prevent steam escaping in the outward directionpast the member 6 from the interior of the head.

The actuator for turning the blower element is shown as comprising ashaft l2 that is aligned with the blower element and extends through astufiing box 14 and in the outer well section B. The member 6 and I2 areprovided with suitable interlocking parts that are engaged with eachother upon moving the member l2 inwardly, and which constitute a drivingconnection "by means of which the actuator and the blower element rotatein unison when the actuator is turned. In the arrangement shown, theouter end of the member 6 contains a square hole l5 while the shaft l2has a squared end Hi that fits loosely into this hole. This part I6 ofthe actuator is shown as having in one side a deep longitudinal groovell into which extends a pin [8 fixed in the wall of the member 6.The'pin and groove in unison with each other. Iig. 1, the actuator forthe middle unit has connection insures that the actuating shaft willalways be in the same angular position relatively to the blower elementwhen coupled thereto.

The shaft I2 extends for some'distance outwardly from the stuffing boxl4 and is supported at its outer end in a bearing in an upright plate orbar [9 which is in turn supported from studs 20 extending outwardly froma pair of oppositely projecting vertical arms 2| on the stufiing box.

On the shaft i2, in the space between the arms 2| of the, plate [9, areone or more sprocket wheels. In the arrangement-shown in Fig.- 2 thereare two of these wheels,' 23 and 24, locked to the shaft by means of astrong key 22 against rotation relatively thereto. "The sprocket wheel23 is provided with a lateral projection'25 that is adapted to strikeagainst lugs 26 and 21 on the plate 89 at the limits f the angle throughwhich the blower element must be moved. Either of the two sprocketwheels may constitute the driven wheel while the-other serves as-adriver for the next higher unit.

-It'will beseen that the actuatingshaft or the entire'actuator can bedetached without in any way disturbing the blower unit proper. thewall Bcan be taken down and rebuilt with the assurance that the blower-elementremains properly disposed with respect to the boiler tubes with which itis-associated.

-When there are several blower units in what maybe termed a battery, asshown, each unit may be operatedin any way best suited for the providedfor operating all three blower elements Thus,---as shown in able way,while, by means of suitable sprocket chains, the wheel 23 drives thewheel 28 and the wheel 29 drives the-wheel-30. -If the wheels are allalike, the three blower elements will turn in unison throughequal'angles when the lower element 3 is turned, the maximum anglethrough which any element can be turned being determined by the lugs 23and 21 and'the projection In Figs. and 6 is shown a simple'means foroperating all of the units, in unison with the other, through theturning of a single handle. There an endless sprocket chain 3| connectstogether the sprocket wheels 23 and 28, while another endless chain runsaroundthe'wheels 29 and 30. The sprocket wheel 24 is driven by anendless chain 34 that passes around a small hand 38. 'The casing 36 maybe mounted on-any' suitable support, such as D, atany-point fromwhich itis convenient to run a sprocket chain to the wheel 24.

It will thus be seen thatwe have produced a simple and novel soot'blower'system in whichv no'parts of the soot blowers,=-proper,- lieonthe exterior of a double walled I boiler-setting, im-

proving the appearance of the power plantand making "it easier to-keeptheouterwall surfaces cleanfthat where" thefurnace is-op'erating underSo also,

forced draft, the openings in the walls to permit operation of theblower elements from the outside are sealed to prevent escape ofcombustion gases into the boiler room; that permits repairs to be madewith a minimum amount of disturbance of the soot blower system; and thatpermits the entire outer wall or casing, of a double Wall constructionto be remove'd' without disturbin'g'the soot blower units.

While we have illustrated and described with particularity only a singlepreferred form of our invention, we do not desire to be limited to the"exact details disclosed; but intend to cover all forms and arrangementscoming within the definitions of ourinvention constituting the ap-"pended claims,

We claim:

1. The combination with a boiler setting having a double wall in whichthe two sections are spaced apart from each other, of a soot blowerunitcomprisinga head'mounted in theispace betweensaid wall sections anda" movable tubular blowing element extending from 'said head through theinner section, said element-extending throughsaidhead to the outer sidethereof, an actuator for said-element extending through the outer wallsection into the vicinity of v.the outer end of saidielement,cooperating 'clutch elements on the meeting ends' of the element and thesaid actuator part adapted'to be engaged with and disengaged from eachother'zby lengthwise movements of the actuator, and means detachablymounted on the outerwall section and rotatably supporting saidshaftwhile holding it against lengthwise movement.

2. The combination with a'boilersettinghaving' a double wall -in -whichthe two-sectionsare spaced 'apart from'ea'ch other, of a'soot blowerunit comprising ahead mounted in the space "between said wall sectionsand a movable tubular blowing element extending. f1'om"-said-. headthrough the inner section, said:felementiextending through said head tothe outer side' thereof, a stuffing boxin the outer section-coaxial'withsaid element, an actuating shaft extending from the exterior'of saidwall through saidstufllng box, cooperating clutch'devices' on said'shaft and said element thatare engaged with -each other through alengthwisemovement :of the shaft, and detachable elements on thelshaftand stufling box normally holding the shaft against lengthwise movement"relative to the stuffing box while leaving the shaft free to rotate.

3. The combination with a boiler setting having a double wall in whichthe two sections'are being spaced apart from each other, of a sootblower'unit comprising a head mounted on the inner wall section in thespace between said wall sections anda movable tubularv blowingi'elementextending from said head through the-"inner section, said elementextending through "said head to the outer side thereof, a transversepartition in said element at some distance'inwardly

